1 /* 2 * Copyright (c) 2000-2001 Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: src/sys/fs/smbfs/smbfs_vnops.c,v 1.2.2.8 2003/04/04 08:57:23 tjr Exp $ 33 */ 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/uio.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/caps.h> 40 #include <sys/namei.h> 41 #include <sys/fcntl.h> 42 #include <sys/mount.h> 43 #include <sys/unistd.h> 44 #include <sys/vnode.h> 45 #include <sys/lockf.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_extern.h> 49 #include <vm/vm_zone.h> 50 51 52 #include <netproto/smb/smb.h> 53 #include <netproto/smb/smb_conn.h> 54 #include <netproto/smb/smb_subr.h> 55 56 #include "smbfs.h" 57 #include "smbfs_node.h" 58 #include "smbfs_subr.h" 59 60 #include <sys/buf.h> 61 62 /* 63 * Prototypes for SMBFS vnode operations 64 */ 65 static int smbfs_create(struct vop_old_create_args *); 66 static int smbfs_mknod(struct vop_old_mknod_args *); 67 static int smbfs_open(struct vop_open_args *); 68 static int smbfs_closel(struct vop_close_args *); 69 static int smbfs_access(struct vop_access_args *); 70 static int smbfs_getattr(struct vop_getattr_args *); 71 static int smbfs_setattr(struct vop_setattr_args *); 72 static int smbfs_read(struct vop_read_args *); 73 static int smbfs_write(struct vop_write_args *); 74 static int smbfs_fsync(struct vop_fsync_args *); 75 static int smbfs_remove(struct vop_old_remove_args *); 76 static int smbfs_link(struct vop_old_link_args *); 77 static int smbfs_lookup(struct vop_old_lookup_args *); 78 static int smbfs_rename(struct vop_old_rename_args *); 79 static int smbfs_mkdir(struct vop_old_mkdir_args *); 80 static int smbfs_rmdir(struct vop_old_rmdir_args *); 81 static int smbfs_symlink(struct vop_old_symlink_args *); 82 static int smbfs_readdir(struct vop_readdir_args *); 83 static int smbfs_bmap(struct vop_bmap_args *); 84 static int smbfs_strategy(struct vop_strategy_args *); 85 static int smbfs_print(struct vop_print_args *); 86 static int smbfs_pathconf(struct vop_pathconf_args *ap); 87 static int smbfs_advlock(struct vop_advlock_args *); 88 static int smbfs_getextattr(struct vop_getextattr_args *ap); 89 90 struct vop_ops smbfs_vnode_vops = { 91 .vop_default = vop_defaultop, 92 .vop_access = smbfs_access, 93 .vop_advlock = smbfs_advlock, 94 .vop_bmap = smbfs_bmap, 95 .vop_close = smbfs_closel, 96 .vop_old_create = smbfs_create, 97 .vop_fsync = smbfs_fsync, 98 .vop_getattr = smbfs_getattr, 99 .vop_getpages = smbfs_getpages, 100 .vop_inactive = smbfs_inactive, 101 .vop_ioctl = smbfs_ioctl, 102 .vop_old_link = smbfs_link, 103 .vop_old_lookup = smbfs_lookup, 104 .vop_old_mkdir = smbfs_mkdir, 105 .vop_old_mknod = smbfs_mknod, 106 .vop_open = smbfs_open, 107 .vop_pathconf = smbfs_pathconf, 108 .vop_print = smbfs_print, 109 .vop_putpages = smbfs_putpages, 110 .vop_read = smbfs_read, 111 .vop_readdir = smbfs_readdir, 112 .vop_reclaim = smbfs_reclaim, 113 .vop_old_remove = smbfs_remove, 114 .vop_old_rename = smbfs_rename, 115 .vop_old_rmdir = smbfs_rmdir, 116 .vop_setattr = smbfs_setattr, 117 .vop_strategy = smbfs_strategy, 118 .vop_old_symlink = smbfs_symlink, 119 .vop_write = smbfs_write, 120 .vop_getextattr = smbfs_getextattr 121 /* .vop_setextattr = smbfs_setextattr */ 122 }; 123 124 /* 125 * smbfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 126 */ 127 static int 128 smbfs_access(struct vop_access_args *ap) 129 { 130 struct vnode *vp = ap->a_vp; 131 struct smbmount *smp = VTOSMBFS(vp); 132 int mode; 133 int error; 134 135 SMBVDEBUG("\n"); 136 mode = ((vp->v_type == VREG) ? 137 smp->sm_args.file_mode : smp->sm_args.dir_mode); 138 error = vop_helper_access(ap, smp->sm_args.uid, smp->sm_args.gid, 139 mode, 0); 140 return (error); 141 } 142 143 /* 144 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 145 * struct file *a_fp) 146 */ 147 /* ARGSUSED */ 148 static int 149 smbfs_open(struct vop_open_args *ap) 150 { 151 struct vnode *vp = ap->a_vp; 152 struct smbnode *np = VTOSMB(vp); 153 struct smb_cred scred; 154 struct vattr vattr; 155 int mode = ap->a_mode; 156 int error, accmode; 157 158 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 159 if (vp->v_type != VREG && vp->v_type != VDIR) { 160 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 161 return EACCES; 162 } 163 if (vp->v_type == VDIR) { 164 if (np->n_opencount == 0) 165 np->n_cached_cred = crhold(ap->a_cred); 166 np->n_opencount++; 167 return (vop_stdopen(ap)); 168 } 169 if (np->n_flag & NMODIFIED) { 170 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 171 return error; 172 smbfs_attr_cacheremove(vp); 173 error = VOP_GETATTR(vp, &vattr); 174 if (error) 175 return error; 176 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 177 } else { 178 error = VOP_GETATTR(vp, &vattr); 179 if (error) 180 return error; 181 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 182 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 183 if (error == EINTR) 184 return error; 185 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 186 } 187 } 188 if (np->n_opencount) { 189 np->n_opencount++; 190 return (vop_stdopen(ap)); 191 } 192 accmode = SMB_AM_OPENREAD; 193 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 194 accmode = SMB_AM_OPENRW; 195 smb_makescred(&scred, curthread, ap->a_cred); 196 error = smbfs_smb_open(np, accmode, &scred); 197 if (error) { 198 if (mode & FWRITE) 199 return EACCES; 200 accmode = SMB_AM_OPENREAD; 201 error = smbfs_smb_open(np, accmode, &scred); 202 } 203 if (!error) { 204 np->n_cached_cred = crhold(ap->a_cred); 205 np->n_opencount++; 206 } 207 smbfs_attr_cacheremove(vp); 208 if (error == 0) 209 vop_stdopen(ap); 210 return error; 211 } 212 213 static int 214 smbfs_closel(struct vop_close_args *ap) 215 { 216 struct vnode *vp = ap->a_vp; 217 struct smbnode *np = VTOSMB(vp); 218 struct smb_cred scred; 219 struct vattr vattr; 220 int error; 221 222 SMBVDEBUG("name=%s, pid=%d, c=%d\n", 223 np->n_name, p->p_pid, np->n_opencount); 224 vn_lock(vp, LK_UPGRADE | LK_RETRY); 225 226 smb_makescred(&scred, curthread, proc0.p_ucred); 227 error = 0; 228 229 if (np->n_opencount == 0) { 230 if (vp->v_type != VDIR) 231 SMBERROR("Negative opencount\n"); 232 goto done; 233 } 234 np->n_opencount--; 235 if (vp->v_type == VDIR) { 236 if (np->n_opencount) 237 goto done; 238 if (np->n_dirseq) { 239 smbfs_findclose(np->n_dirseq, &scred); 240 np->n_dirseq = NULL; 241 } 242 } else { 243 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 244 if (np->n_opencount) 245 goto done; 246 VOP_GETATTR(vp, &vattr); 247 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 248 &np->n_mtime, &scred); 249 } 250 crfree(np->n_cached_cred); 251 np->n_cached_cred = NULL; 252 smbfs_attr_cacheremove(vp); 253 done: 254 vop_stdclose(ap); 255 return error; 256 } 257 258 /* 259 * smbfs_getattr call from vfs. 260 * 261 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 262 */ 263 static int 264 smbfs_getattr(struct vop_getattr_args *ap) 265 { 266 struct vnode *vp = ap->a_vp; 267 struct smbnode *np = VTOSMB(vp); 268 struct vattr *va=ap->a_vap; 269 struct smbfattr fattr; 270 struct smb_cred scred; 271 u_quad_t oldsize; 272 int error; 273 274 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 275 error = smbfs_attr_cachelookup(vp, va); 276 if (!error) 277 return 0; 278 SMBVDEBUG("not in the cache\n"); 279 smb_makescred(&scred, curthread, proc0.p_ucred); 280 oldsize = np->n_size; 281 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 282 if (error) { 283 SMBVDEBUG("error %d\n", error); 284 return error; 285 } 286 smbfs_attr_cacheenter(vp, &fattr); 287 smbfs_attr_cachelookup(vp, va); 288 if (np->n_opencount) 289 np->n_size = oldsize; 290 return 0; 291 } 292 293 /* 294 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred) 295 */ 296 static int 297 smbfs_setattr(struct vop_setattr_args *ap) 298 { 299 struct vnode *vp = ap->a_vp; 300 struct smbnode *np = VTOSMB(vp); 301 struct vattr *vap = ap->a_vap; 302 struct timespec *mtime, *atime; 303 struct smb_cred scred; 304 struct smb_share *ssp = np->n_mount->sm_share; 305 struct smb_vc *vcp = SSTOVC(ssp); 306 u_quad_t tsize = 0; 307 int isreadonly, doclose, error = 0; 308 309 SMBVDEBUG("\n"); 310 if (vap->va_flags != VNOVAL) 311 return EOPNOTSUPP; 312 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 313 /* 314 * Disallow write attempts if the filesystem is mounted read-only. 315 */ 316 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 317 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 318 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 319 return EROFS; 320 smb_makescred(&scred, curthread, ap->a_cred); 321 if (vap->va_size != VNOVAL) { 322 switch (vp->v_type) { 323 case VDIR: 324 return EISDIR; 325 case VREG: 326 break; 327 default: 328 return EINVAL; 329 } 330 if (isreadonly) 331 return EROFS; 332 doclose = 0; 333 vnode_pager_setsize(vp, (u_long)vap->va_size); 334 tsize = np->n_size; 335 np->n_size = vap->va_size; 336 if (np->n_opencount == 0) { 337 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 338 if (error == 0) 339 doclose = 1; 340 } 341 if (error == 0) 342 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 343 if (doclose) 344 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 345 if (error) { 346 np->n_size = tsize; 347 vnode_pager_setsize(vp, (u_long)tsize); 348 return error; 349 } 350 } 351 mtime = atime = NULL; 352 if (vap->va_mtime.tv_sec != VNOVAL) 353 mtime = &vap->va_mtime; 354 if (vap->va_atime.tv_sec != VNOVAL) 355 atime = &vap->va_atime; 356 if (mtime != atime) { 357 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 358 (error = caps_priv_check(ap->a_cred, SYSCAP_NOVFS_SETATTR)) && 359 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 360 (error = VOP_EACCESS(vp, VWRITE, ap->a_cred)))) 361 { 362 return (error); 363 } 364 #if 0 365 if (mtime == NULL) 366 mtime = &np->n_mtime; 367 if (atime == NULL) 368 atime = &np->n_atime; 369 #endif 370 /* 371 * If file is opened, then we can use handle based calls. 372 * If not, use path based ones. 373 */ 374 if (np->n_opencount == 0) { 375 if (vcp->vc_flags & SMBV_WIN95) { 376 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 377 if (!error) { 378 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 379 VOP_GETATTR(vp, &vattr);*/ 380 if (mtime) 381 np->n_mtime = *mtime; 382 VOP_CLOSE(vp, FWRITE, NULL); 383 } 384 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 385 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 386 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 387 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 388 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 389 } else { 390 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 391 } 392 } else { 393 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 394 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 395 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 396 error = smbfs_smb_setftime(np, mtime, atime, &scred); 397 } else { 398 /* 399 * I have no idea how to handle this for core 400 * level servers. The possible solution is to 401 * update mtime after file is closed. 402 */ 403 SMBERROR("can't update times on an opened file\n"); 404 } 405 } 406 } 407 /* 408 * Invalidate attribute cache in case if server doesn't set 409 * required attributes. 410 */ 411 smbfs_attr_cacheremove(vp); /* invalidate cache */ 412 VOP_GETATTR(vp, vap); 413 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 414 return error; 415 } 416 /* 417 * smbfs_read call. 418 * 419 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 420 * struct ucred *a_cred) 421 */ 422 static int 423 smbfs_read(struct vop_read_args *ap) 424 { 425 struct vnode *vp = ap->a_vp; 426 struct uio *uio = ap->a_uio; 427 428 SMBVDEBUG("\n"); 429 if (vp->v_type != VREG && vp->v_type != VDIR) 430 return EPERM; 431 return smbfs_readvnode(vp, uio, ap->a_cred); 432 } 433 434 /* 435 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 436 * struct ucred *a_cred) 437 */ 438 static int 439 smbfs_write(struct vop_write_args *ap) 440 { 441 struct vnode *vp = ap->a_vp; 442 struct uio *uio = ap->a_uio; 443 444 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 445 if (vp->v_type != VREG) 446 return (EPERM); 447 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 448 } 449 /* 450 * smbfs_create call 451 * Create a regular file. On entry the directory to contain the file being 452 * created is locked. We must release before we return. 453 * 454 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 455 * struct componentname *a_cnp, struct vattr *a_vap) 456 */ 457 static int 458 smbfs_create(struct vop_old_create_args *ap) 459 { 460 struct vnode *dvp = ap->a_dvp; 461 struct vattr *vap = ap->a_vap; 462 struct vnode **vpp=ap->a_vpp; 463 struct componentname *cnp = ap->a_cnp; 464 struct smbnode *dnp = VTOSMB(dvp); 465 struct vnode *vp; 466 struct vattr vattr; 467 struct smbfattr fattr; 468 struct smb_cred scred; 469 char *name = cnp->cn_nameptr; 470 int nmlen = cnp->cn_namelen; 471 int error; 472 473 474 SMBVDEBUG("\n"); 475 *vpp = NULL; 476 if (vap->va_type != VREG) 477 return EOPNOTSUPP; 478 if ((error = VOP_GETATTR(dvp, &vattr))) 479 return error; 480 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 481 482 error = smbfs_smb_create(dnp, name, nmlen, &scred); 483 if (error) 484 return error; 485 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 486 if (error) 487 return error; 488 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 489 if (error) 490 return error; 491 *vpp = vp; 492 return error; 493 } 494 495 /* 496 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 497 * struct componentname *a_cnp) 498 */ 499 static int 500 smbfs_remove(struct vop_old_remove_args *ap) 501 { 502 struct vnode *vp = ap->a_vp; 503 /* struct vnode *dvp = ap->a_dvp;*/ 504 struct componentname *cnp = ap->a_cnp; 505 struct smbnode *np = VTOSMB(vp); 506 struct smb_cred scred; 507 int error; 508 509 if (vp->v_type == VDIR || np->n_opencount || VREFCNT(vp) > 1) 510 return EPERM; 511 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 512 error = smbfs_smb_delete(np, &scred); 513 return error; 514 } 515 516 /* 517 * smbfs_file rename call 518 * 519 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 520 * struct componentname *a_fcnp, struct vnode *a_tdvp, 521 * struct vnode *a_tvp, struct componentname *a_tcnp) 522 */ 523 static int 524 smbfs_rename(struct vop_old_rename_args *ap) 525 { 526 struct vnode *fvp = ap->a_fvp; 527 struct vnode *tvp = ap->a_tvp; 528 struct vnode *fdvp = ap->a_fdvp; 529 struct vnode *tdvp = ap->a_tdvp; 530 struct componentname *tcnp = ap->a_tcnp; 531 /* struct componentname *fcnp = ap->a_fcnp;*/ 532 struct smb_cred scred; 533 u_int16_t flags = 6; 534 int error=0; 535 536 /* Check for cross-device rename */ 537 if ((fvp->v_mount != tdvp->v_mount) || 538 (tvp && (fvp->v_mount != tvp->v_mount))) { 539 error = EXDEV; 540 goto out; 541 } 542 543 if (tvp && VREFCNT(tvp) > 1) { 544 error = EBUSY; 545 goto out; 546 } 547 flags = 0x10; /* verify all writes */ 548 if (fvp->v_type == VDIR) { 549 flags |= 2; 550 } else if (fvp->v_type == VREG) { 551 flags |= 1; 552 } else { 553 error = EINVAL; 554 goto out; 555 } 556 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 557 /* 558 * It seems that Samba doesn't implement SMB_COM_MOVE call... 559 */ 560 #ifdef notnow 561 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 562 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 563 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 564 } else 565 #endif 566 { 567 /* 568 * We have to do the work atomicaly 569 */ 570 if (tvp && tvp != fvp) { 571 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 572 if (error) 573 goto out_cacherem; 574 } 575 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 576 tcnp->cn_nameptr, tcnp->cn_namelen, 577 &scred); 578 if (error == 0) { 579 smbfs_attr_cacherename(fvp, 580 tcnp->cn_nameptr, 581 tcnp->cn_namelen); 582 } 583 } 584 585 out_cacherem: 586 smbfs_attr_cacheremove(fdvp); 587 smbfs_attr_cacheremove(tdvp); 588 out: 589 if (tdvp == tvp) 590 vrele(tdvp); 591 else 592 vput(tdvp); 593 if (tvp) 594 vput(tvp); 595 vrele(fdvp); 596 vrele(fvp); 597 #ifdef possible_mistake 598 #error x 599 vgone_vxlocked(fvp); 600 if (tvp) 601 vgone_vxlocked(tvp); 602 #endif 603 return error; 604 } 605 606 /* 607 * somtime it will come true... 608 * 609 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 610 * struct componentname *a_cnp) 611 */ 612 static int 613 smbfs_link(struct vop_old_link_args *ap) 614 { 615 return EOPNOTSUPP; 616 } 617 618 /* 619 * smbfs_symlink link create call. 620 * Sometime it will be functional... 621 * 622 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 623 * struct componentname *a_cnp, struct vattr *a_vap, 624 * char *a_target) 625 */ 626 static int 627 smbfs_symlink(struct vop_old_symlink_args *ap) 628 { 629 return EOPNOTSUPP; 630 } 631 632 static int 633 smbfs_mknod(struct vop_old_mknod_args *ap) 634 { 635 return EOPNOTSUPP; 636 } 637 638 /* 639 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 640 * struct componentname *a_cnp, struct vattr *a_vap) 641 */ 642 static int 643 smbfs_mkdir(struct vop_old_mkdir_args *ap) 644 { 645 struct vnode *dvp = ap->a_dvp; 646 /* struct vattr *vap = ap->a_vap;*/ 647 struct vnode *vp; 648 struct componentname *cnp = ap->a_cnp; 649 struct smbnode *dnp = VTOSMB(dvp); 650 struct vattr vattr; 651 struct smb_cred scred; 652 struct smbfattr fattr; 653 char *name = cnp->cn_nameptr; 654 int len = cnp->cn_namelen; 655 int error; 656 657 if ((error = VOP_GETATTR(dvp, &vattr))) { 658 return error; 659 } 660 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 661 return EEXIST; 662 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 663 error = smbfs_smb_mkdir(dnp, name, len, &scred); 664 if (error) 665 return error; 666 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 667 if (error) 668 return error; 669 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 670 if (error) 671 return error; 672 *ap->a_vpp = vp; 673 return 0; 674 } 675 676 /* 677 * smbfs_remove directory call 678 * 679 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 680 * struct componentname *a_cnp) 681 */ 682 static int 683 smbfs_rmdir(struct vop_old_rmdir_args *ap) 684 { 685 struct vnode *vp = ap->a_vp; 686 struct vnode *dvp = ap->a_dvp; 687 struct componentname *cnp = ap->a_cnp; 688 /* struct smbmount *smp = VTOSMBFS(vp);*/ 689 struct smbnode *dnp = VTOSMB(dvp); 690 struct smbnode *np = VTOSMB(vp); 691 struct smb_cred scred; 692 int error; 693 694 if (dvp == vp) 695 return EINVAL; 696 697 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 698 error = smbfs_smb_rmdir(np, &scred); 699 dnp->n_flag |= NMODIFIED; 700 smbfs_attr_cacheremove(dvp); 701 return error; 702 } 703 704 /* 705 * smbfs_readdir call 706 * 707 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 708 * int *a_eofflag, off_t *a_cookies, int a_ncookies) 709 */ 710 static int 711 smbfs_readdir(struct vop_readdir_args *ap) 712 { 713 struct vnode *vp = ap->a_vp; 714 struct uio *uio = ap->a_uio; 715 int error; 716 717 if (vp->v_type != VDIR) 718 return (EPERM); 719 #ifdef notnow 720 if (ap->a_ncookies) { 721 kprintf("smbfs_readdir: no support for cookies now..."); 722 return (EOPNOTSUPP); 723 } 724 #endif 725 error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_FAILRECLAIM); 726 if (error == 0) { 727 error = smbfs_readvnode(vp, uio, ap->a_cred); 728 vn_unlock(vp); 729 } 730 return error; 731 } 732 733 /* 734 * smbfs_fsync(struct vnode *a_vp, int a_waitfor) 735 */ 736 /* ARGSUSED */ 737 static int 738 smbfs_fsync(struct vop_fsync_args *ap) 739 { 740 /* return (smb_flush(ap->a_vp, ap->a_waitfor, curthread, 1));*/ 741 return (0); 742 } 743 744 /* 745 * smbfs_print(struct vnode *a_vp) 746 */ 747 static int 748 smbfs_print(struct vop_print_args *ap) 749 { 750 struct vnode *vp = ap->a_vp; 751 struct smbnode *np = VTOSMB(vp); 752 753 if (np == NULL) { 754 kprintf("no smbnode data\n"); 755 return (0); 756 } 757 kprintf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 758 np->n_name, np->n_parent ? np->n_parent : NULL, 759 np->n_opencount); 760 lockmgr_printinfo(&vp->v_lock); 761 kprintf("\n"); 762 return (0); 763 } 764 765 /* 766 * smbfs_pathconf(struct vnode *vp, int name, register_t *retval) 767 */ 768 static int 769 smbfs_pathconf(struct vop_pathconf_args *ap) 770 { 771 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 772 struct smb_vc *vcp = SSTOVC(smp->sm_share); 773 register_t *retval = ap->a_retval; 774 int error = 0; 775 776 switch (ap->a_name) { 777 case _PC_LINK_MAX: 778 *retval = 0; 779 break; 780 case _PC_NAME_MAX: 781 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 782 break; 783 case _PC_PATH_MAX: 784 *retval = 800; /* XXX: a correct one ? */ 785 break; 786 default: 787 error = EINVAL; 788 } 789 return error; 790 } 791 792 /* 793 * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio) 794 */ 795 static int 796 smbfs_strategy(struct vop_strategy_args *ap) 797 { 798 struct bio *bio = ap->a_bio; 799 struct thread *td = NULL; 800 int error = 0; 801 802 SMBVDEBUG("\n"); 803 if (bio->bio_flags & BIO_SYNC) 804 td = curthread; /* XXX */ 805 806 if (bio->bio_flags & BIO_SYNC) 807 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td); 808 return error; 809 } 810 811 /* 812 * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, 813 * off_t *a_doffsetp, int *a_runp, int *a_runb) 814 */ 815 static int 816 smbfs_bmap(struct vop_bmap_args *ap) 817 { 818 if (ap->a_doffsetp != NULL) 819 *ap->a_doffsetp = ap->a_loffset; 820 if (ap->a_runp != NULL) 821 *ap->a_runp = 0; 822 if (ap->a_runb != NULL) 823 *ap->a_runb = 0; 824 return (0); 825 } 826 827 /* 828 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 829 * int fflag, struct ucred *cred, struct proc *p) 830 */ 831 int 832 smbfs_ioctl(struct vop_ioctl_args *ap) 833 { 834 return EINVAL; 835 } 836 837 static char smbfs_atl[] = "rhsvda"; 838 839 /* 840 * smbfs_getextattr(struct vnode *a_vp, char *a_name, struct uio *a_uio, 841 * struct ucred *a_cred) 842 */ 843 static int 844 smbfs_getextattr(struct vop_getextattr_args *ap) 845 { 846 struct vnode *vp = ap->a_vp; 847 struct ucred *cred = ap->a_cred; 848 struct uio *uio = ap->a_uio; 849 const char *name = ap->a_attrname; 850 struct smbnode *np = VTOSMB(vp); 851 struct vattr vattr; 852 char buf[10]; 853 int i, attr, error; 854 855 error = VOP_EACCESS(vp, VREAD, cred); 856 if (error) 857 return error; 858 error = VOP_GETATTR(vp, &vattr); 859 if (error) 860 return error; 861 if (strcmp(name, "dosattr") == 0) { 862 attr = np->n_dosattr; 863 for (i = 0; i < 6; i++, attr >>= 1) 864 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 865 buf[i] = 0; 866 error = uiomove(buf, i, uio); 867 868 } else 869 error = EINVAL; 870 return error; 871 } 872 873 /* 874 * Since we expected to support F_GETLK (and SMB protocol has no such function), 875 * it is necessary to use lf_advlock(). It would be nice if this function had 876 * a callback mechanism because it will help to improve a level of consistency. 877 * 878 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 879 * struct flock *a_fl, int a_flags) 880 */ 881 int 882 smbfs_advlock(struct vop_advlock_args *ap) 883 { 884 struct vnode *vp = ap->a_vp; 885 struct smbnode *np = VTOSMB(vp); 886 struct flock *fl = ap->a_fl; 887 caddr_t id = (caddr_t)1 /* ap->a_id */; 888 /* int flags = ap->a_flags;*/ 889 struct thread *td = curthread; /* XXX */ 890 struct smb_cred scred; 891 off_t start, end, size; 892 int error, lkop; 893 894 if (vp->v_type == VDIR) { 895 /* 896 * SMB protocol have no support for directory locking. 897 * Although locks can be processed on local machine, I don't 898 * think that this is a good idea, because some programs 899 * can work wrong assuming directory is locked. So, we just 900 * return 'operation not supported 901 */ 902 return EOPNOTSUPP; 903 } 904 size = np->n_size; 905 switch (fl->l_whence) { 906 case SEEK_SET: 907 case SEEK_CUR: 908 start = fl->l_start; 909 break; 910 case SEEK_END: 911 start = fl->l_start + size; 912 default: 913 return EINVAL; 914 } 915 if (start < 0) 916 return EINVAL; 917 if (fl->l_len == 0) 918 end = -1; 919 else { 920 end = start + fl->l_len - 1; 921 if (end < start) 922 return EINVAL; 923 } 924 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 925 switch (ap->a_op) { 926 case F_SETLK: 927 switch (fl->l_type) { 928 case F_WRLCK: 929 lkop = SMB_LOCK_EXCL; 930 break; 931 case F_RDLCK: 932 lkop = SMB_LOCK_SHARED; 933 break; 934 case F_UNLCK: 935 lkop = SMB_LOCK_RELEASE; 936 break; 937 default: 938 return EINVAL; 939 } 940 error = lf_advlock(ap, &np->n_lockf, size); 941 if (error) 942 break; 943 lkop = SMB_LOCK_EXCL; 944 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 945 if (error) { 946 ap->a_op = F_UNLCK; 947 lf_advlock(ap, &np->n_lockf, size); 948 } 949 break; 950 case F_UNLCK: 951 lf_advlock(ap, &np->n_lockf, size); 952 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 953 break; 954 case F_GETLK: 955 error = lf_advlock(ap, &np->n_lockf, size); 956 break; 957 default: 958 return EINVAL; 959 } 960 return error; 961 } 962 963 static int 964 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 965 { 966 static const char *badchars = "*/:<>;?"; 967 static const char *badchars83 = " +|,"; 968 const char *cp; 969 int i, error; 970 971 /* 972 * Backslash characters, being a path delimiter, are prohibited 973 * within a path component even for LOOKUP operations. 974 */ 975 if (index(name, '\\') != NULL) 976 return ENOENT; 977 978 if (nameiop == NAMEI_LOOKUP) 979 return 0; 980 error = ENOENT; 981 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 982 /* 983 * Name should conform 8.3 format 984 */ 985 if (nmlen > 12) 986 return ENAMETOOLONG; 987 cp = index(name, '.'); 988 if (cp == NULL) 989 return error; 990 if (cp == name || (cp - name) > 8) 991 return error; 992 cp = index(cp + 1, '.'); 993 if (cp != NULL) 994 return error; 995 for (cp = name, i = 0; i < nmlen; i++, cp++) 996 if (index(badchars83, *cp) != NULL) 997 return error; 998 } 999 for (cp = name, i = 0; i < nmlen; i++, cp++) 1000 if (index(badchars, *cp) != NULL) 1001 return error; 1002 return 0; 1003 } 1004 1005 /* 1006 * Things go even weird without fixed inode numbers... 1007 * 1008 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 1009 * struct componentname *a_cnp) 1010 */ 1011 int 1012 smbfs_lookup(struct vop_old_lookup_args *ap) 1013 { 1014 struct componentname *cnp = ap->a_cnp; 1015 struct thread *td = cnp->cn_td; 1016 struct vnode *dvp = ap->a_dvp; 1017 struct vnode **vpp = ap->a_vpp; 1018 struct vnode *vp; 1019 struct smbmount *smp; 1020 struct mount *mp = dvp->v_mount; 1021 struct smbnode *dnp; 1022 struct smbfattr fattr, *fap; 1023 struct smb_cred scred; 1024 char *name = cnp->cn_nameptr; 1025 int flags = cnp->cn_flags; 1026 int nameiop = cnp->cn_nameiop; 1027 int nmlen = cnp->cn_namelen; 1028 int lockparent, wantparent, error, isdot; 1029 1030 SMBVDEBUG("\n"); 1031 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1032 *vpp = NULL; 1033 if (dvp->v_type != VDIR) 1034 return ENOTDIR; 1035 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1036 SMBFSERR("invalid '..'\n"); 1037 return EIO; 1038 } 1039 #ifdef SMB_VNODE_DEBUG 1040 { 1041 char *cp, c; 1042 1043 cp = name + nmlen; 1044 c = *cp; 1045 *cp = 0; 1046 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1047 VTOSMB(dvp)->n_name); 1048 *cp = c; 1049 } 1050 #endif 1051 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1052 return EROFS; 1053 if ((error = VOP_EACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1054 return error; 1055 lockparent = flags & CNP_LOCKPARENT; 1056 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1057 smp = VFSTOSMBFS(mp); 1058 dnp = VTOSMB(dvp); 1059 isdot = (nmlen == 1 && name[0] == '.'); 1060 1061 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1062 1063 if (error) 1064 return ENOENT; 1065 1066 error = 0; 1067 smb_makescred(&scred, td, cnp->cn_cred); 1068 fap = &fattr; 1069 if (flags & CNP_ISDOTDOT) { 1070 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1071 &scred); 1072 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1073 } else { 1074 fap = &fattr; 1075 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1076 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1077 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1078 } 1079 if (error && error != ENOENT) 1080 return error; 1081 if (error) { /* entry not found */ 1082 /* 1083 * Handle RENAME or CREATE case... 1084 */ 1085 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1086 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1087 if (error) 1088 return error; 1089 if (!lockparent) { 1090 vn_unlock(dvp); 1091 cnp->cn_flags |= CNP_PDIRUNLOCK; 1092 } 1093 return (EJUSTRETURN); 1094 } 1095 return ENOENT; 1096 }/* else { 1097 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1098 }*/ 1099 /* 1100 * handle DELETE case ... 1101 */ 1102 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1103 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1104 if (error) 1105 return error; 1106 if (isdot) { 1107 vref(dvp); 1108 *vpp = dvp; 1109 return 0; 1110 } 1111 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1112 if (error) 1113 return error; 1114 *vpp = vp; 1115 if (!lockparent) { 1116 vn_unlock(dvp); 1117 cnp->cn_flags |= CNP_PDIRUNLOCK; 1118 } 1119 return 0; 1120 } 1121 if (nameiop == NAMEI_RENAME && wantparent) { 1122 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1123 if (error) 1124 return error; 1125 if (isdot) 1126 return EISDIR; 1127 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1128 if (error) 1129 return error; 1130 *vpp = vp; 1131 if (!lockparent) { 1132 vn_unlock(dvp); 1133 cnp->cn_flags |= CNP_PDIRUNLOCK; 1134 } 1135 return 0; 1136 } 1137 if (flags & CNP_ISDOTDOT) { 1138 vn_unlock(dvp); 1139 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1140 if (error) { 1141 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1142 return error; 1143 } 1144 if (lockparent) { 1145 error = vn_lock(dvp, LK_EXCLUSIVE | LK_FAILRECLAIM); 1146 if (error) { 1147 cnp->cn_flags |= CNP_PDIRUNLOCK; 1148 vput(vp); 1149 return error; 1150 } 1151 } 1152 *vpp = vp; 1153 } else if (isdot) { 1154 vref(dvp); 1155 *vpp = dvp; 1156 } else { 1157 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1158 if (error) 1159 return error; 1160 *vpp = vp; 1161 SMBVDEBUG("lookup: getnewvp!\n"); 1162 if (!lockparent) { 1163 vn_unlock(dvp); 1164 cnp->cn_flags |= CNP_PDIRUNLOCK; 1165 } 1166 } 1167 return 0; 1168 } 1169